You need to
install and
declare the taglib before you can use its tags.
- Download
jstl-1.2.jar
and place it in /WEB-INF/lib
or /appserver/lib
if not done yet.
- Declare
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
in top of your JSP.
- Now you can use
<c:redirect />
.